The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample statistics from one experiment include 570 peas with 111 of them having yellow pods. Find the value of the test statistic.

- anonymous

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- anonymous

hi

- anonymous

Hey there

- anonymous

hi

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## More answers

- anonymous

don`t understand the question!!!

- anonymous

Nope

- amistre64

what do you not understand about the question?

- anonymous

How to put the equation into my TI83 to obtain the value

- anonymous

Of the test statistic

- amistre64

looks like we have 1 sample, and are tring to evaluate a proportion ...

- amistre64

what does 2nd, vars, tests (maybe calc) get for us?

- amistre64

http://cfcc.edu/faculty/cmoore/TI-STAT.htm

- anonymous

ok I have it up but how would I input the information?

- amistre64

##### 1 Attachment

- amistre64

tell me what the inputs are ... are what youd assume they should be

- amistre64

po = ?
n = ?
x = ?

- anonymous

po=0.25
n=600
x= no sure about

- anonymous

not 600 I meant 570

- amistre64

po is good, now from the information we have only 2 numbers left to work
570 peas with
111 of them having yellow pods

- anonymous

Yes. So, then to put that into an equation is what I am having difficulty with.

- amistre64

there is no equation, you simply type them into the calculator
po = .25
n=570
x=111
the last thing to do is to determine the type of tails we want to test.

- amistre64

you can work it as an equation, but then why would we have used the function to start with?

- anonymous

Oh ok... So how would I input it into the ti83?

- amistre64

i already covered that ... with links and pictures and everything.

- anonymous

Ok, I will try it out.

- amistre64

once you get to the function and fill in those 3 parts, theres one last part to cover. let me know when you are there.

- anonymous

ok, I have it calculated

- amistre64

and what is your value?

- amistre64

also, what did you choose for the last portion?
\(\ne\)p,

p

- anonymous

All I see is:
z=-3.047
p=.0011
p^=.1947
n=570

- amistre64

your test stat is z :)

- anonymous

I just clicked on calculate

- amistre64

thats fine, we werent asked anything that would alter the z value.

- anonymous

OMG thank you thank you!!!

- amistre64

another way to have done is:
z = (111/570 - .25)/sqrt(.25(1-.25)/570)
which is -3.047
http://www.wolframalpha.com/input/?i=%28111%2F570+-+.25%29%2Fsqrt%28.25%281-.25%29%2F570%29

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